CVE-2026-48593

{"id": "CVE-2026-48593", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-48593", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-26T20:46:18.908875Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 5.9, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "PASSIVE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "affectedData": [{"cpes": ["cpe:2.3:a:oban_web_project:oban_web:*:*:*:*:*:*:*:*"], "vendor": "oban-bg", "modules": ["'Elixir.Oban.Web.CronExpr'"], "product": "oban_web", "versions": [{"status": "affected", "version": "2.12.0", "lessThan": "2.12.5", "versionType": "semver"}], "packageURL": "pkg:hex/oban_web", "packageName": "oban_web", "programFiles": ["lib/oban/web/cron_expr.ex"], "collectionURL": "https://repo.hex.pm", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.Oban.Web.CronExpr':describe/1"}, {"name": "'Elixir.Oban.Web.CronExpr':parse_range/1"}, {"name": "'Elixir.Oban.Web.CronExpr':expand_dom_parts/1"}, {"name": "'Elixir.Oban.Web.CronExpr':expand_dow_parts/1"}]}, {"cpes": ["cpe:2.3:a:oban_web_project:oban_web:*:*:*:*:*:*:*:*"], "repo": "https://github.com/oban-bg/oban_web.git", "vendor": "oban-bg", "modules": ["'Elixir.Oban.Web.CronExpr'"], "product": "oban_web", "versions": [{"status": "affected", "version": "a97c7960bb389b05aaab4cf8042985f02ceddc24", "lessThan": "9998b7e284e02fdd4645dd6231760038e63b584d", "versionType": "git"}], "packageURL": "pkg:github/oban-bg/oban_web", "packageName": "oban-bg/oban_web", "programFiles": ["lib/oban/web/cron_expr.ex"], "collectionURL": "https://github.com", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.Oban.Web.CronExpr':describe/1"}, {"name": "'Elixir.Oban.Web.CronExpr':parse_range/1"}, {"name": "'Elixir.Oban.Web.CronExpr':expand_dom_parts/1"}, {"name": "'Elixir.Oban.Web.CronExpr':expand_dow_parts/1"}]}]}], "published": "2026-05-26T21:16:41.857", "references": [{"url": "https://cna.erlef.org/cves/CVE-2026-48593.html", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/oban-bg/oban_web/commit/9998b7e284e02fdd4645dd6231760038e63b584d", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/oban-bg/oban_web/security/advisories/GHSA-6xh2-93p9-vqh4", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://osv.dev/vulnerability/EEF-CVE-2026-48593", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "Uncontrolled Resource Consumption vulnerability in oban-bg oban_web ('Elixir.Oban.Web.CronExpr' modules) allows memory exhaustion via unbounded cron range expansion.\n\nAn attacker with access to schedule cron jobs can submit a malicious cron expression such as \"0 0 1-100000000 * *\". When a user with dashboard access views the cron job list, 'Elixir.Oban.Web.CronExpr':describe/1 is called to render the expression. parse_range/1 parses both range endpoints via Integer.parse/1 with no bounds check, and the downstream helpers expand_dom_parts/1 and expand_dow_parts/1 materialise the range eagerly via Enum.to_list/1, causing allocation of ~2.4 GB and stalling or crashing the BEAM node. A sibling helper extract_dom_values already validates range bounds, but the expansion helpers do not.\n\nThis issue affects oban_web: from 2.12.0 before 2.12.5."}, {"lang": "es", "value": "Vulnerabilidad de consumo de recursos no controlado en oban-bg oban_web (m\u00f3dulos 'Elixir.Oban.Web.CronExpr') permite el agotamiento de la memoria a trav\u00e9s de la expansi\u00f3n ilimitada del rango cron.\n\nUn atacante con acceso para programar trabajos cron puede enviar una expresi\u00f3n cron maliciosa como '0 0 1-100000000 * *'. Cuando un usuario con acceso al panel de control ve la lista de trabajos cron, se llama a 'Elixir.Oban.Web.CronExpr':describe/1 para renderizar la expresi\u00f3n. parse_range/1 analiza ambos puntos finales del rango a trav\u00e9s de Integer.parse/1 sin verificaci\u00f3n de l\u00edmites, y los ayudantes posteriores expand_dom_parts/1 y expand_dow_parts/1 materializan el rango de forma \u00e1vida a trav\u00e9s de Enum.to_list/1, causando una asignaci\u00f3n de ~2.4 GB y el estancamiento o ca\u00edda del nodo BEAM. Un ayudante hermano extract_dom_values ya valida los l\u00edmites del rango, pero los ayudantes de expansi\u00f3n no lo hacen.\n\nEste problema afecta a oban_web: desde 2.12.0 antes de 2.12.5."}], "lastModified": "2026-07-24T11:10:00.170", "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}